Data

What Is the Compounding Error in Post-Boom Market Forecasts?

The Thailand Cannabis Report  ·  2026 Edition  ·  Field-verified market intelligence  ยท  Last reviewed: July 2026

The compounding error is treating a market's boom-era peak as its new baseline and then applying a growth rate on top of it, which widens the gap between the forecast and reality with every year projected forward.

There is a specific trap in forecasting a market that has just been through a boom, and several of the largest Thailand cannabis projections walked straight into it.

How Does the Forecasting Error Actually Compound?

A forecast built during or just after a peak tends to treat that peak as the new baseline. It then applies a growth rate on top. If the peak was in fact a high water mark rather than a floor, the model is now compounding growth on a number that was already too high. Each year added to the projection widens the gap between the forecast and the market.

How Can You Test Any Long-Range CAGR Forecast?

This gives you a practical test for any long-range market number you are handed. Ask what year the base was set in, and what the market did after that year. If the base sits at a boom and the curve marches upward from there, treat the headline with real caution.

We rebuilt the trajectory from current conditions rather than from a past peak. The shape that produces is materially different from the confident upward lines still in circulation, and it changes how a serious entrant should think about timing.

Quick answers
What is the compounding error in post-boom market forecasts?

Treating a boom-era peak as the new baseline and applying a growth rate on top of it, so each additional year of projection widens the gap between the forecast and the market.

How can you test whether a long-range market forecast has this flaw?

Ask what year the base was set in and what the market did after that year. If the base sits at a boom and the curve marches upward from there, treat the headline with caution.

Did several major Thailand cannabis forecasts fall into this trap?

Yes. Several of the largest Thailand cannabis projections walked straight into this trap by treating the boom-era peak as a floor rather than a high point.

What approach avoids the compounding error?

Rebuilding the trajectory from current conditions rather than from a past peak, which produces a materially different shape than the confident upward lines still in circulation.

The narrative is free. The numbers are in the report.

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The Thailand Cannabis Report

Three findings from the 2026 edition, free.

Renewal rate
15.5%

Of 8,636 expired dispensary licences, 1,339 renewed. The rest did not bother. That is not a market collapsing. That is a market taking out its own trash.

Certain
Per-shop revenue
Went up

Fewer shops, higher revenue each. The closures removed storefronts, not revenue, because the shops that closed were earning almost nothing. Every desk model read the count and stopped.

Likely
Concentration
Concentrated

A small minority of shops earn a disproportionate share of all revenue. The bottom half earns a fraction of it. Nobody else has measured this.

Likely

Built from 850+ dispensary visits across Thailand, 100+ dispensary owner and operator interviews, 30+ farm owner and operator interviews, and 400+ customer interviews across 40 nationalities. 101 pages. 23 chapters. Every chapter sourced, every figure confidence-tagged.

Published by RCC Ltd.